Who would have guessed that the short-lived WB series Summerland would have been a hottie factory? While the focus was on star Jesse McCartney, it was a young guest star by the name of Zac Efron that would one day rule the world of teen girl hearts. But the show's other hunk, Australian Ryan Kwanten, vanished after the series ended.

Now Kwanten is back to raise sexiness to a whole new level on HBO's vampire drama True Blood. Playing the troublesome Jason Stackhouse, Kwanten is in all his sexy glory, parading around in the hot Louisiana bayou without a shirt and engaging in rough sex with his many special lady friends. And since True Blood is on HBO, the sexiness factor is multiplied by 20 since nudity becomes a very real possibility.